Device for reversing gaseous currents in ovens



E. LECOCQ. DEVICE FOR REVERSING GASEOUS CURRENTS IN OVENS.

APPLICATION FILED JULY 18. 1917.

1,3 1,595, Patented Dec. 7 1920.

lwverzior his attorn UNITED STATES PATENT OFFICE.

EUGENE LECOCQ, OF BRUSSELS, BELGIUM, .A .SSIGNOR T0 SOCIETE GENERALE DE FOURS A. COKE, SYSTEMES LECOCQ, (SOCIETE ANONYME,) 0F BRUSSELS, BEL- GIUM.

Specification of Letters Patent.

Patented Dec. '7, 1920.

Application filed July 18, 1917. Serial No. 181,450.

To all w ham it may concern:

Be it known that I, EUGENE Lnoooo, a subject of the King of Belgium, residing at Brussels, in the Kingdom of Belgium, have invented certain new and useful Improvements in De ices for Reversing Gaseous Currents in )vens, of which the following is a specification.

In regenerative ovens, such as coke ovens, metallurgic ovens, etc., the currents of fresh air for combustion and of the burnt gases are periodically inverted by means of dampers or by means of plugs or valves of various systems.

The principal object of my invention is to provide a simple device for reversing gaseous currents in metallurgical furnaces and one in which the operative elements are largely balanced. 7

With this object in view, my invention secures a device for reversing gaseous currents which, as compared with the previously known devices, is of the utmost simplicity and insures a perfect working especially as concerns the tightness which must be most complete in order to secure the circulation of the gaseous currents without loss of heat.

In the accompanying drawings, by invention is shown by way of example as applied to a heat regenerating coke-oven.

In said drawings:

Figure 1 is a vertical section on line A-B of Fig 3, Fig. 2 is a horizontal section on line C-D of Fig. 1 and Fig. 3 is a side section on line E-F of Fig.2.

The oven shown in the drawings is of the class in which there usually are a gallery 6, two galleries 2 and 5 called collecting galleries alternately traversed by the burnt gases escaping from the regenerators 3 or 4 and by the air which has to pass through the regenerators, similar to the gallery 6 of the chimney 7, and in which the air supplied from the out side gathers before being sent into one. of

the collecting galleries 2 or 5 by operating the reversing device.

The reversing device comprises two dampers 8 and 9 working conjointlyby means of a suitable connection as, by way and a fourth gallery 1 .clined plane, vertical plane.

of example, of a cable .11 running over a pulley 10.

According to one of the characteristics of my invention, the damper 8 cooperates with opening 12 and 13 communicating with channels .6 and 1 respectively, while damper 9 cooperates with oppositely disposed openings 14 and 15 communicating with channels 1 and 6 respectively.

The working of the system according to my invention will now be easily understood. In the example shown, the air for the combustion which gathers in the gallery 1 flows, owing to the position of the dampers 8 and 9, into the collecting gallery 2 and is imparted to all the left-hand side regenerators 3. After the combustion has taken place in the'heating chambers of the ovens, the burnt gases flow through the regenerators I, gather in the collecting gallery 5 and escape through gallery 6 to the chimney 7.

In order to reverse the gaseous currents, the apparatus 10 is operated; the damper 8 rises and the damper 9 sinks. The gallery 1. is in this way put into connection with the collecting gallery 5 and the collecting gallery'2 connects with gallery 6, so that the gases flow in the following manner: The air of gallery 1 flows into gallery 5 and therefrom into the regenerators 4; the burnt gases pass through the regenerators 3 gather in gallery 2 and flow out through gallery 6 to the chimney 7.

It will be seen from the drawings that, owing to a special arrangement of the airgallery, the collecting galleries and the chimney-gallery, the'reversing of the gaseous currents is effected in an exceedingly simple manner, that the reversing mechanism is quite elementary and that the dampers insure, in their various positions, a perfect obstruction of the galleries which must be closed by them.

- The dampers instead of moving on an incould .move on a thoroughly The two dampers could be arranged so as to move independently and not be operated simultaneously.

What'I claim is:

1. A regenerative oven comprising a of the other conduit, one of the branch channel openings of theair intake being in the same inclined plane with one of the branch channel openings in the burned gas conduit, the other branch openings being also in a common inclined plane, each pair of openings in a common plane leading to a common passage, a pair of regenerators, one

connected to each of said common passages,

valve members, one cooperating with each pair of openings in a common plane to simultaneously close one opening and open the other,'connecting means for said valve members to cause them to move together whereby as one valve member moves to connect a common passage with the air intake channel and close the opening between the same common assage and the burned gas channel, the ot er valve member will move to connect its corresponding common passage with the burned as channel and close the opening between t e same common passage and the air intake channel, and vice versa when the valves are moved in the opposite direction.

2. A regenerative oven comprising a struc ture provided with several passages, one passage for burned gases having a discharge opening at one end. and a pair of branch passages with openings at the other end, an intake passage for air having a pair 01 branch passages superimposed over those of the branch passages with openings at one end, one of the branch passage openings of the air intake being in the same plane with one of the branch passage openings in the burned gas passage, the other branch openings being also in a common plane separate from the first named plane, each pair of openings in a common plane leading to a common passage, a pair of regenerators, one connected to each of said common assages, slide valve members, one cooperatln'g with each pair of openings in a common plane, each valve member being so proportioned that when it moves from one position to another it covers one and opens the other of the pair of branch openings, connecting means for said valve members to cause them to move together whereby as one valve member moves to cover one opening and uncover the other of that pair of openings the other valve member will have a corresponding but,

opposite movement.

3. A regenerative oven comprislng a structure provided with several passages, one

passage for burned gases having a discharge opening at one end, and a pair of branch passages with openings at the other end, an intake passage forair having a pair of branch passagesdisposed above those of the other branch passages with openings at one end, one of the branch passage openings of the air intake being in the same plane with one of the branch passage openings in the burned gas passage, the other branch openings being also in a common plane, each pair of openings in a common plane leading to a common passage, a pair of regenerators, one connected to each of said common passages, valve members, one cooperating with each pair of openings in a common plane, each valve member being so proportioned that when it moves from one position to another it covers one and opens the other of the pair of branch openings, means connecting said valve members to cause them to move together whereby as one valve moves to cover one opening and uncover the other of that pair of openings the other Valve member will have a corresponding but opposite movement.

4. A pair of regenerators, a conduit leading from each, an intake conduit for air, a discharge conduit for burned gases, the intake and discharge conduits being branched to connect with the conduit from each regenerator, a two way valve in the end of each conduit that leads from each regenerator and adapted in one position to connect the regenerator conduit to the air intake conduit and close the connection to the discharge conduit, and in another position to reverse said connections, and connecting means between the valves whereby as one valve is moved to one position, the other valve will be moved correspondingly but to provide an opposite connection between its regenerator conduit and the intake and discharge conduits.

A pair of regencrators, a conduit leading from each, an intake conduit for air,

'a discharge conduit for burned gases. the in- .other valve will be moved correspondingly but to provide an opposite connection be tween its regenerator conduit and the intake and discharge conduits.

6. A pair of regenerators, a conduit t iding from each, an intake conduit for air. a discharge conduit for burned gases, the intake and discharge conduits beingbranched to connect with the conduit from each regenerator, a two Way valve in the end of each of the conduits that leads from each regenerator and adapted in one position to connect the regenerator conduit to the air intake conduit and close the connection to the discharge conduit, and in another 10 EUGENE LECOGQ.

\Vitnesses JA UEs SULY, CHARLES RoY NASMITH. 

